The data engine probe is not connecting to the new database server after migration.
Post MS SQL Server DB migration from 2016 to 2019 the data_engine was not successfully connecting to the UIM database.
Cluster name was first used but cluster listener address was required.
The listener name is a special object to route traffic based on incoming query type.
See also:
Checked data_engine and hub settings which were correct and message throughput was excellent.